diff --git a/python/damask/_rotation.py b/python/damask/_rotation.py
index 567c91d37..3d914f808 100644
--- a/python/damask/_rotation.py
+++ b/python/damask/_rotation.py
@@ -26,11 +26,8 @@ class Rotation:
     - Coordinate frames are right-handed.
     - A rotation angle ω is taken to be positive for a counterclockwise rotation
       when viewing from the end point of the rotation axis towards the origin.
-    - Rotations will be interpreted in the passive sense.
-    - Euler angle triplets are implemented using the Bunge convention,
-      with angular ranges of [0,2π], [0,π], [0,2π].
-    - The rotation angle ω is limited to the interval [0,π].
-    - The real part of a quaternion is positive, Re(q) ≥ 0
+    - Rotations will be interpreted in the passive sense, i.e. as rotation of
+      the coordinate frame.
     - P = -1 (as default).
 
     Examples
@@ -879,6 +876,10 @@ class Rotation:
         reciprocal : bool, optional
             Basis vectors are given in reciprocal (instead of real) space. Defaults to False.
 
+        Returns
+        -------
+        new : damask.Rotation
+
         """
         om = np.array(basis,dtype=float)
         if om.shape[-2:] != (3,3): raise ValueError('invalid shape')
diff --git a/python/damask/util.py b/python/damask/util.py
index dc19287f1..8f85a75b1 100644
--- a/python/damask/util.py
+++ b/python/damask/util.py
@@ -574,7 +574,7 @@ def _docstringer(docstring: _Union[str, _Callable],
         shift = min([len(line)-len(line.lstrip(' '))-indent for line in content])
         extra = '\n'.join([(line[shift:] if shift > 0 else
                           f'{" "*-shift}{line}') for line in content])
-        docstring_ = _re.sub(fr'(^([ ]*){key}\s*\n\2{"-"*len(key)}[\n ]*[A-Za-z0-9 ]*: ([^\n]+\n)*)',
+        docstring_ = _re.sub(fr'(^([ ]*){key}\s*\n\2{"-"*len(key)}[\n ]*[A-Za-z0-9_ ]*: ([^\n]+\n)*)',
                              fr'\1{extra}\n',
                              docstring_,flags=_re.MULTILINE)
 
@@ -590,7 +590,7 @@ def _docstringer(docstring: _Union[str, _Callable],
                             +(return_class.__name__ if not isinstance(return_class,str) else return_class)
                            )
 
-        return _re.sub(r'(^([ ]*)Returns\s*\n\2-------\s*\n[ ]*[A-Za-z0-9 ]*: )(.*)\n',
+        return _re.sub(r'(^([ ]*)Returns\s*\n\2-------\s*\n[ ]*[A-Za-z0-9_ ]*: )(.*)\n',
                            fr'\1{return_type_}\n',
                            docstring_,flags=_re.MULTILINE)